Large-screen LED transparent screen multilayer circuit board

Abstract

The utility model relates to the technical field of circuit boards, in particular to a large-screen LED transparent screen multilayer circuit board which comprises a first circuit board, a second circuit board and a stacking device, the stacking device is arranged on one side of the first circuit board and comprises a first clamping sleeve, the first clamping sleeve is sleeved with the first circuit board, and the second clamping sleeve is sleeved with the second circuit board. The side, away from the first clamping sleeve, of the first circuit board is sleeved with a second clamping sleeve, the surface of the second clamping sleeve is in threaded connection with a bolt, the second clamping sleeve and the first circuit board are fixed through the bolt, one side of the second clamping sleeve is fixedly connected with a connecting rod, the surface of the connecting rod is rotationally connected with a third clamping sleeve, and the second circuit board and the third clamping sleeve are arranged in an inserted mode. According to the multi-layer circuit board stacking device, the first circuit board and the second circuit board can be conveniently placed among the clamping sleeves, preliminarily fixed through the bolts and stably connected through the threaded rods, orderly stacking of multiple layers of circuit boards is achieved, and an effective mode is provided for compact circuit layout in equipment.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and in particular to a multi-layer circuit board for a large-screen LED transparent screen. Background Technology

[0002] The multi-layer circuit board of the LED transparent screen is a key component for realizing the display function of the LED transparent screen. It is usually composed of multiple substrates, and the electrical connection between each layer is achieved through special processes. The circuit board integrates fine circuits to control the on / off state, color and display content of the LED beads. The multi-layer circuit board is also lightweight and thin, reducing the weight of the screen, reducing the difficulty of installation and the load-bearing pressure on the building, while optimizing heat dissipation performance to ensure stable operation of the LED transparent screen and extend its service life.

[0003] Existing technologies include, for example, the utility model with publication number CN206004995U. This utility model relates to the field of multilayer circuit boards, specifically a multilayer circuit board including a protective plate. The top of the protective plate has a cavity, and positioning posts are provided on both the left and right side walls of the cavity. Heat dissipation holes are also provided on both the left and right side walls of the protective plate. Compared with existing multilayer circuit boards, this utility model has a simple structure and good heat dissipation effect. It replaces the previous method of using a single alignment hole on the board surface for alignment, which easily leads to unclear alignment direction and large alignment error. By matching the size of the cavity with the single-layer circuit board assembly, misalignment is prevented during alignment, thus reducing alignment error. Furthermore, based on the original multilayer circuit board, this utility model adds multiple heat dissipation devices, such as heat dissipation holes and heat dissipation grooves, and the positioning posts are also made of heat-dissipating silicone posts, giving the multilayer circuit board a good heat dissipation effect.

[0004] However, with the continuous trend of miniaturization and integration of electronic devices, space resources are becoming increasingly precious. Multi-layer circuit boards adopt a stacking method, which can stack more circuit boards in an orderly manner within a limited physical space. After the multi-layer circuit boards are stacked, each layer is tightly attached. When a fault occurs in a certain layer of circuit board, it is difficult for maintenance personnel to quickly locate the specific faulty layer because it is difficult to directly determine the problem from the appearance. It requires a lot of time and effort to use complex testing methods to find out which layer of circuit board has a problem. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the existing technology where multiple layers of circuit boards are stacked together and tightly bonded. When a fault occurs in a certain layer of the circuit board, it is difficult for maintenance personnel to quickly locate the specific faulty layer because it is difficult to directly determine the problem from the appearance. It requires a lot of time and effort and complex testing methods to find out which layer of the circuit board is faulty. Therefore, this invention proposes a multi-layer circuit board for large-screen LED transparent screens.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a multi-layer circuit board for a large-screen LED transparent screen, comprising a first circuit board, a second circuit board, and a stacking device. The stacking device is disposed on one side of the first circuit board and includes a first clamping sleeve fitted onto the first circuit board. A second clamping sleeve is fitted onto the side of the first circuit board away from the first clamping sleeve. Bolts are threaded onto the surface of the second clamping sleeve, and the second clamping sleeve is fixed to the first circuit board by bolts. A connecting rod is fixedly connected to one side of the second clamping sleeve, and a third clamping sleeve is rotatably connected to the surface of the connecting rod. The second circuit board is inserted into the third sleeve, and a fourth sleeve is fitted onto the side of the second circuit board away from the third sleeve. The third sleeve is fixed to the second circuit board by bolts, and a threaded rod is threaded onto the surface of the fourth sleeve. Insertion holes are opened on the surfaces of the first sleeve and the first circuit board, and the threaded rod is inserted into the first sleeve and the first circuit board. By setting up a stacking device, the first circuit board and the second circuit board can be conveniently placed between each sleeve, initially fixed by bolts, and then firmly connected by threaded rods, realizing the orderly stacking of multi-layer circuit boards and providing an effective way for compact circuit layout within the equipment.

[0007] Preferably, a pull rod is fixedly connected to the surface of the fourth sleeve, and a top block is slidably connected to one end of the first sleeve. By setting the top block, the sliding of the top block directly determines the ejection action of the third sleeve, accurately controlling the displacement of the third sleeve, ensuring that it can be ejected smoothly according to the design requirements, so that the second circuit board can be smoothly flipped and unfolded for maintenance operations.

[0008] Preferably, there are two top blocks, which are symmetrically arranged, and the top blocks abut against the fourth jacket.

[0009] Preferably, a return spring is fixedly connected to one side of the top block, and the end of the return spring away from the top block is fixedly connected to the first clamp. By setting the return spring, when the circuit board needs to be repaired, the threaded rod is rotated to disengage it from the first circuit board and the first clamp. At this time, the return spring is unrestrained and uses its own elastic force to squeeze the top block to slide, thereby pushing out the third clamp, creating conditions for flipping the second circuit board, so that the circuit board can be smoothly unfolded for repair.

[0010] Preferably, the surface of the threaded rod is provided with a buffer assembly, the buffer assembly including a knob, the knob being sleeved on the threaded rod, and a crossbar being fixedly connected to the inner wall of the knob. By setting the buffer assembly, after the second circuit board is flipped and unfolded, the knob, the crossbar and the pressure spring work together to form a reliable support for the flipped second circuit board, preventing the circuit board from shaking or shifting, and creating stable maintenance conditions for the operator.

[0011] Preferably, the surface of the threaded rod is provided with a sliding hole, and the crossbar is slidably connected to the threaded rod.

[0012] Preferably, a pressure spring is fixedly connected to one end of the crossbar, and the end of the pressure spring away from the crossbar is fixedly connected to the threaded rod. By setting the pressure spring, when the second circuit board is flipped and unfolded, the pressure spring generates an upward supporting force through its own elastic deformation. Together with the knob and the crossbar, the second circuit board is stably supported, so that the circuit board will not shake or fall during maintenance, which facilitates the smooth progress of maintenance operations.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, by setting up a stacking device, the first circuit board and the second circuit board are placed in the middle of the first, second, third, and fourth clips respectively during use. The first circuit board and the second circuit board are initially fixed to the second and fourth clips with bolts. Then, the threaded rod is rotated and inserted into the first and second circuit boards to complete the fixation. When the circuit board needs to be inspected, the threaded rod is rotated to disengage from the first circuit board and the first clip. The return spring loses its restraint and the top block slides to push out the third clip. At this time, the second circuit board can be flipped over, and the first and second circuit boards can be unfolded for inspection. By setting up a stacking device, the first and second circuit boards can be conveniently placed between the clips, initially fixed with bolts, and then firmly connected with threaded rods, realizing the orderly stacking of multi-layer circuit boards, providing an effective way for compact circuit layout within the equipment.

[0015] 2. In this utility model, by setting a buffer component, after the second circuit board is flipped and unfolded, the knob, in conjunction with the crossbar and the pressure spring, supports the flipped second circuit board, which facilitates the operator's maintenance and reduces circuit board failures. By setting a buffer component, after the second circuit board is flipped and unfolded, the knob, crossbar and pressure spring work together to form a reliable support for the flipped second circuit board, preventing the circuit board from shaking or shifting, and creating stable maintenance conditions for the operator. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a multi-layer circuit board for a large-screen LED transparent screen is provided for this utility model.

[0017] Figure 2 This utility model proposes a multi-layer circuit board for a large-screen LED transparent screen. Figure 1 A magnified structural diagram at point A;

[0018] Figure 3 This utility model provides a schematic diagram of the unfolded structure of a multi-layer circuit board for a large-screen LED transparent screen.

[0019] Figure 4 This utility model provides a schematic diagram of a buffer assembly structure for a multi-layer circuit board of a large-screen LED transparent screen.

[0020] Figure 5 This utility model proposes a multi-layer circuit board for a large-screen LED transparent screen. Figure 4 A magnified structural diagram at point B.

[0021] Legend: 1. First circuit board; 2. Second circuit board; 3. Stacking device; 31. First clamp; 32. Second clamp; 33. Connecting rod; 34. Third clamp; 35. Fourth clamp; 36. Pull rod; 37. Bolt; 38. Buffer assembly; 381. Knob; 382. Crossbar; 383. Pressure spring; 39. Threaded rod; 310. Top block; 311. Return spring. Detailed Implementation

[0022] Please see Figures 1-5 This utility model provides a technical solution: a multi-layer circuit board for a large-screen LED transparent screen, including a first circuit board 1, a second circuit board 2 and a stacking device 3, wherein the stacking device 3 is disposed on one side of the first circuit board 1.

[0023] In this embodiment: the stacking device 3 includes a first sleeve 31, which is sleeved on the first circuit board 1. A second sleeve 32 is sleeved on the side of the first circuit board 1 away from the first sleeve 31. A bolt 37 is threaded onto the surface of the second sleeve 32, and the second sleeve 32 is fixed to the first circuit board 1 by the bolt 37. A connecting rod 33 is fixedly connected to one side of the second sleeve 32, and a third sleeve 34 is rotatably connected to the surface of the connecting rod 33. The second circuit board 2 is inserted into the third sleeve 34, and a fourth sleeve is sleeved on the side of the second circuit board 2 away from the third sleeve 34. 35. The third jacket 34 is fixed to the second circuit board 2 by bolts 37. The surface of the fourth jacket 35 is threaded with a threaded rod 39. The surfaces of the first jacket 31 and the first circuit board 1 are provided with insertion holes. The threaded rod 39 is inserted into the first jacket 31 and the first circuit board 1. By setting up the stacking device 3, the first circuit board 1 and the second circuit board 2 can be conveniently placed between each jacket. They are initially fixed by bolts 37 and then firmly connected by threaded rods 39, realizing the orderly stacking of multi-layer circuit boards and providing an effective way for compact circuit layout in the equipment.

[0024] Specifically, a pull rod 36 is fixedly connected to the surface of the fourth sleeve 35, and a top block 310 is slidably connected to one end of the first sleeve 31. By setting the top block 310, the sliding of the top block 310 directly determines the ejection action of the third sleeve 34, precisely controlling the displacement of the third sleeve 34 to ensure that it can be ejected smoothly according to the design requirements, so that the second circuit board 2 can be smoothly flipped and unfolded for maintenance operations.

[0025] Specifically, there are two top blocks 310, which are arranged symmetrically, and the top blocks 310 abut against the fourth sleeve 35.

[0026] Specifically, a return spring 311 is fixedly connected to one side of the top block 310. The end of the return spring 311 away from the top block 310 is fixedly connected to the first clamp 31. By setting the return spring 311, when the circuit board needs to be repaired, the threaded rod 39 is rotated to disengage it from the first circuit board 1 and the first clamp 31. At this time, the return spring 311 is unrestrained and uses its own elasticity to squeeze the top block 310 to slide, thereby pushing out the third clamp 34, creating conditions for flipping the second circuit board 2, so that the circuit board can be smoothly unfolded for repair.

[0027] Specifically, a buffer assembly 38 is provided on the surface of the threaded rod 39. The buffer assembly 38 includes a knob 381, which is sleeved on the threaded rod 39. A crossbar 382 is fixedly connected to the inner wall of the knob 381.

[0028] In this embodiment: by setting up a buffer component 38, after the second circuit board 2 is flipped and unfolded, the knob 381, the crossbar 382 and the pressure spring 383 work together to form a reliable support for the flipped second circuit board 2, preventing the circuit board from shaking or shifting, and creating stable maintenance conditions for the operator.

[0029] Specifically, the surface of the threaded rod 39 is provided with a sliding hole, and the crossbar 382 is slidably connected to the threaded rod 39.

[0030] Specifically, a pressure spring 383 is fixedly connected to one end of the crossbar 382, ​​and the end of the pressure spring 383 away from the crossbar 382 is fixedly connected to the threaded rod 39.

[0031] In this embodiment: by setting a pressure spring 383, when the second circuit board 2 is flipped and unfolded, the pressure spring 383 generates an upward supporting force through its own elastic deformation. Together with the knob 381 and the crossbar 382, ​​it stably supports the second circuit board 2, so that the circuit board will not shake or fall at will during the operation, which facilitates the smooth progress of the maintenance operation.

[0032] Working principle: By setting up the stacking device 3, the first circuit board 1 and the second circuit board 2 are placed in the middle of the first clamp 31, the second clamp 32, the third clamp 34, and the fourth clamp 35 respectively during use. The first circuit board 1 and the second circuit board 2 are initially fixed to the second clamp 32 and the fourth clamp 35 by bolts 37. Then, the threaded rod 39 is rotated and inserted into the first circuit board 1 and the second circuit board 2 to complete the fixation. When the circuit board needs to be repaired, the threaded rod 39 is rotated to disengage the first circuit board 1 and the first clamp 31. The return spring 311 loses its restraint and squeezes the top block 310 to slide and push out the third clamp 34. At this time, the second circuit board 2 can be flipped over and the first circuit board 1 and the second circuit board 2 can be unfolded for repair. By setting up the stacking device 3, the first circuit board 1 and the second circuit board 2 can be conveniently placed between the clamps, initially fixed by bolts 37, and then firmly connected by threaded rod 39, realizing the orderly stacking of multi-layer circuit boards, providing an effective way for compact circuit layout in the equipment.

[0033] By setting up the buffer assembly 38, after the second circuit board 2 is flipped and unfolded, the knob 381, together with the crossbar 382 and the pressure spring 383, supports the flipped second circuit board 2, which facilitates the operator's maintenance and reduces circuit board failures. By setting up the buffer assembly 38, after the second circuit board 2 is flipped and unfolded, the knob 381, the crossbar 382 and the pressure spring 383 work together to form a reliable support for the flipped second circuit board 2, preventing the circuit board from shaking or shifting, and creating stable maintenance conditions for the operator.

Claims

1. A multi-layer circuit board for a large-screen LED transparent screen, comprising a first circuit board (1), a second circuit board (2), and a stacking device (3), characterized in that: The stacking device (3) is disposed on one side of the first circuit board (1). The stacking device (3) includes a first sleeve (31), which is sleeved on the first circuit board (1). A second sleeve (32) is sleeved on the side of the first circuit board (1) away from the first sleeve (31). A bolt (37) is threaded onto the surface of the second sleeve (32). The second sleeve (32) is fixed to the first circuit board (1) by the bolt (37). A connecting rod (33) is fixedly connected to one side of the second sleeve (32). The surface of the first circuit board (2) is rotatably connected to a third sleeve (34). The second circuit board (2) is inserted into the third sleeve (34). A fourth sleeve (35) is fitted on the side of the second circuit board (2) away from the third sleeve (34). The third sleeve (34) is fixed to the second circuit board (2) by bolts (37). The surface of the fourth sleeve (35) is threadedly connected to a threaded rod (39). The surfaces of the first sleeve (31) and the first circuit board (1) are provided with insertion holes. The threaded rod (39) is inserted into the first sleeve (31) and the first circuit board (1).

2. The multi-layer circuit board for a large-screen LED transparent screen according to claim 1, characterized in that: A pull rod (36) is fixedly connected to the surface of the fourth sleeve (35), and a top block (310) is slidably connected to one end of the first sleeve (31).

3. The multi-layer circuit board for a large-screen LED transparent screen according to claim 2, characterized in that: There are two top blocks (310), which are symmetrically arranged, and the top blocks (310) abut against the fourth jacket (35).

4. A multi-layer circuit board for a large-screen LED transparent screen according to claim 3, characterized in that: A reset spring (311) is fixedly connected to one side of the top block (310), and the end of the reset spring (311) away from the top block (310) is fixedly connected to the first sleeve (31).

5. A multi-layer circuit board for a large-screen LED transparent screen according to claim 1, characterized in that: The surface of the threaded rod (39) is provided with a buffer assembly (38), the buffer assembly (38) includes a knob (381), the knob (381) is sleeved on the threaded rod (39), and a crossbar (382) is fixedly connected to the inner wall of the knob (381).

6. A multi-layer circuit board for a large-screen LED transparent screen according to claim 5, characterized in that: The threaded rod (39) has a sliding hole on its surface, and the crossbar (382) is slidably connected to the threaded rod (39).

7. A multi-layer circuit board for a large-screen LED transparent screen according to claim 6, characterized in that: A pressure spring (383) is fixedly connected to one end of the crossbar (382), and the end of the pressure spring (383) away from the crossbar (382) is fixedly connected to the threaded rod (39).

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